Sampling tube for full-automatic nucleic acid extractor

Abstract

The utility model discloses a sampling tube for a full-automatic nucleic acid extraction instrument, which comprises a sampling tube body, and a positioning block is fixedly connected to the inner wall of the sampling tube body; the inner wall of the sampling tube body is provided with the positioning block, and the positioning rod on one side of the connecting block can be inserted into the slot by matching the positioning block with the slot, the positioning rod and the connecting block, so that the swab guide tube and the filter net bag can be conveniently mounted; meanwhile, filtering net bags and swab guide pipes of different specifications or materials can be conveniently detached and replaced, so that flexible replacement can be conveniently carried out according to sample types and experiment requirements, in addition, counterbores are formed in the positioning blocks, clamping assemblies are arranged in the counterbores, and the positioning blocks are used in cooperation with the positioning holes; the positioning rod is clamped and positioned, so that the filter net bag and the swab catheter are more stable after being mounted, and are not easy to fall off.

Description

Technical Field

[0001] The utility model relates to the technical field of sampling tubes, in particular to a sampling tube used for a full-automatic nucleic acid extractor. Background Art

[0002] In the field of disease control and monitoring, swabs can be used to extract body fluids, and then the swabs are placed in sampling tubes. Multiple sampling tubes are placed on a bracket, and the sampling needle of the fully automatic extractor is inserted into the sampling tube for subsequent work. During the sampling process, the sampler needs to hold the tube cap all the time, and the swab enters the sampling tube directly, mixes with the sampling liquid and needs to be shaken before testing to increase the sampling. When the sampling needle of the fully automatic nucleic acid detection and extraction instrument enters the sampling tube, the sampling needle is easily blocked by the swab, swab fluff, etc., causing the instrument to stop working or even malfunction, thereby affecting the efficiency of nucleic acid testing.

[0003] For example, a sampling tube and a fully automatic nucleic acid detection and extraction instrument (announcement number: CN219218011U), the device includes a tube body and a tube cover for closing the upper opening of the tube body, a filter mesh bag for isolating swabs is arranged inside the tube body, an inlet duct is arranged on the upper end of the filter mesh bag, the inlet duct is located inside the tube body and is fitted and fixed to the inner wall of the tube body, the lower opening of the inlet duct is connected to the filter mesh bag, the upper opening of the inlet duct is aligned with the upper opening of the tube body, and a notch for the entry and exit of a sample needle is arranged between the upper opening of the inlet duct and the upper opening of the tube body. The swab is isolated by the filter mesh bag to avoid clogging of the sample needle. It is convenient and quick to use, suitable for fully automatic extraction instruments, improves detection efficiency, and saves human resources.

[0004] However, the device still has the following defects:

[0005] When the device is in use, the filter net bag used to isolate the swab is not easy to disassemble. The non-detachable net bag may limit the use of the sampling tube under different types of samples or different experimental conditions. For certain specific samples or experimental requirements, net bags of different specifications or materials may need to be used, and the non-detachable design cannot meet this flexibility requirement. Therefore, we need to propose a sampling tube for a fully automatic nucleic acid extractor. Utility Model Content

[0006] The purpose of the utility model is to provide a sampling tube for a fully automatic nucleic acid extractor, aiming to solve the problem in the prior art that for certain specific samples or experimental requirements, net bags of different specifications or materials may need to be used, and the non-detachable design cannot meet such flexibility requirements.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A sampling tube for a fully automatic nucleic acid extractor comprises: a sampling tube body, a positioning block fixedly connected to the inner wall of the sampling tube body; a slot provided at the top of the positioning block, a positioning rod slidably inserted in the slot, and a connecting block fixedly connected to the outer wall of the positioning rod, a swab catheter fixedly connected to one side wall of the connecting block; a filter net bag fixedly connected to the bottom of the swab catheter; countersunk holes provided in the positioning block, the countersunk holes are arranged in two groups, and the two groups of countersunk holes are symmetrically arranged; and clamping components respectively arranged in the two groups of countersunk holes for positioning the positioning rod.

[0009] Preferably, the clamping assembly includes a return spring, one end of which is fixedly connected to an inner wall of one side of the countersunk hole, the other end of which is fixedly connected to a sliding column, and one end of which is inserted into the interior of the positioning rod.

[0010] Preferably, the outer wall of the sliding column is slidably connected to the inner wall of the countersunk hole, and the end of the sliding column away from the return spring is configured to be hemispherical.

[0011] Preferably, two groups of positioning holes matching the hemispherical shape are formed on the outer wall of the positioning rod, the two groups of positioning holes are symmetrically arranged, and the two groups of hemispherical shapes are respectively inserted into the inside of the two groups of positioning holes.

[0012] Preferably, two groups of extrusion parts are arranged on the outer wall of the sampling tube body, the two groups of extrusion parts are arranged symmetrically, and the sampling tube body is configured as a soft elastic tube that can be extruded and deformed.

[0013] Preferably, the swab catheter is configured to be a funnel-shaped catheter whose inner diameter gradually decreases from top to bottom, and the swab catheter is configured to be a hard catheter.

[0014] Preferably, a tube cover is hingedly connected to the top of the sampling tube body through a flip cover hinge, and a sealing block adapted to the top opening of the sampling tube body is fixedly connected to the bottom of the tube cover, and the sealing block is clamped in the top opening of the sampling tube body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model provides a positioning block on the inner wall of the sampling tube body, and cooperates with the slot, the positioning rod and the connecting block. The positioning rod on one side of the connecting block can be inserted into the inside of the slot, so as to facilitate the installation of the swab catheter and the filter net bag, and at the same time facilitate the disassembly and replacement of filter net bags and swab catheters of different specifications or materials, so as to facilitate flexible replacement according to sample types and experimental requirements. In addition, a countersunk hole is opened inside the positioning block, and a clamping assembly is provided inside the countersunk hole, which is used in conjunction with the positioning hole to clamp and position the positioning rod, so that the filter net bag and the swab catheter are more stable after installation and are not prone to falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure inside the sampling tube body of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the positioning block, swab catheter and filter net bag of the utility model;

[0020] Figure 4 The utility model is a schematic diagram of the structure of the positioning block, the positioning rod and the clamping assembly.

[0021] In the figure: 1. Sampling tube body; 2. Positioning block; 3. Positioning rod; 4. Connecting block; 5. Swab catheter; 6. Filter net bag; 7. Countersunk hole; 8. Clamping assembly; 801. Return spring; 802. Sliding column; 9. Slot; 10. Hemispherical; 11. Positioning hole; 12. Extrusion part; 13. Tube cover; 14. Sealing block. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 , the utility model provides a technical solution:

[0024] A sampling tube for a fully automatic nucleic acid extractor, comprising: a sampling tube body 1, a positioning block 2 fixedly connected to the inner wall of the sampling tube body 1; a slot 9 provided at the top of the positioning block 2, a positioning rod 3 slidably inserted inside the slot 9, and a connecting block 4 fixedly connected to the outer wall of the positioning rod 3, a swab catheter 5 fixedly connected to one side wall of the connecting block 4; a filter net bag 6 fixedly connected to the bottom of the swab catheter 5; a countersunk hole 7 provided inside the positioning block 2, the countersunk holes 7 are arranged in two groups, and the two groups of countersunk holes 7 are symmetrically arranged; and a clamping assembly 8 respectively arranged inside the two groups of countersunk holes 7 for positioning the positioning rod 3;

[0025] The utility model provides a positioning block 2 on the inner wall of the sampling tube body 1, and cooperates with the slot 9, the positioning rod 3 and the connecting block 4, so that the positioning rod 3 on one side of the connecting block 4 can be plugged into the inside of the slot 9, so as to facilitate the installation of the swab catheter 5 and the filter net bag 6, and at the same time facilitate the disassembly and replacement of the filter net bag 6 and the swab catheter 5 of different specifications or materials, so as to facilitate flexible replacement according to the sample type and experimental requirements;

[0026] The clamping assembly 8 includes a return spring 801, one end of which is fixedly connected to the inner wall of one side of the countersunk hole 7, and the other end of the return spring 801 is fixedly connected to a sliding column 802, and one end of the sliding column 802 is inserted into the interior of the positioning rod 3;

[0027] The outer wall of the sliding column 802 is slidably connected to the inner wall of the countersunk hole 7, and the end of the sliding column 802 away from the return spring 801 is set to a hemispherical shape 10;

[0028] Two groups of positioning holes 11 matched with the hemispherical shape 10 are provided on the outer wall of the positioning rod 3. The two groups of positioning holes 11 are symmetrically arranged, and the two groups of hemispherical shapes 10 are respectively inserted into the inside of the two groups of positioning holes 11. When the filter net bag 6 and the swab catheter 5 are installed, the positioning rod 9 can be first inserted into the inside of the slot 9. When the bottom edge of the positioning rod 3 contacts the hemispherical shape 10, as the positioning rod 3 continues to move downward, the bottom edge of the positioning rod 3 will squeeze the hemispherical shape 10, thereby squeezing the sliding column 802. At this time, the return spring 801 is in a compressed state. When the hemispherical shape 10 is fully aligned with the positioning hole 11, under the action of the rebound force of the return spring 801, the hemispherical shape 10 is firmly inserted into the inside of the positioning hole 11, so that the positioning rod 3 can be clamped and positioned, thereby achieving the effect of quickly installing the filter net bag 6 and the swab catheter 5; similarly, when the filter net bag 6 and the swab catheter 5 need to be disassembled, the positioning rod 3 can be lifted up with force to complete the disassembly;

[0029] Two groups of squeezing parts 12 are arranged on the outer wall of the sampling tube body 1. The two groups of squeezing parts 12 are arranged symmetrically, and the sampling tube body 1 is arranged as a soft elastic tube that can be squeezed and deformed. The arrangement of the squeezing parts 12 makes the sampling tube body 1 easier to operate manually during use. By pressing the squeezing parts 12, the experimenter can easily apply a certain pressure to the inside of the sampling tube body 1, thereby helping to control the flow of liquid in the sampling tube body 1 and achieve operations such as sample mixing.

[0030] The swab catheter 5 is configured to be in a funnel shape with an inner diameter that gradually decreases from top to bottom, and the swab catheter 5 is configured to be a hard catheter, and the lower opening of the swab catheter is used to squeeze the swab that passes alone;

[0031] The top of the sampling tube body 1 is hinged with a tube cover 13 through a flip hinge, and the bottom of the tube cover 13 is fixedly connected with a sealing block 14 that is compatible with the top opening of the sampling tube body 1. The sealing block 14 is snap-fitted into the top opening of the sampling tube body 1, which is beneficial to improving the airtightness of the sampling tube body 1.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A sampling tube for a fully automatic nucleic acid extractor, characterized in that: include: A sampling tube body (1), wherein a positioning block (2) is fixedly connected to the inner wall of the sampling tube body (1); A slot (9) is provided at the top of the positioning block (2), a positioning rod (3) is slidably inserted into the slot (9), and A connecting block (4) fixedly connected to the outer wall of the positioning rod (3), a swab catheter (5) being fixedly connected to one side wall of the connecting block (4); A filter net bag (6) fixedly connected to the bottom of the swab catheter (5); A countersunk hole (7) is provided inside the positioning block (2), wherein the countersunk holes (7) are provided in two groups, and the two groups of the countersunk holes (7) are symmetrically arranged; and Clamping components (8) are respectively arranged inside the two groups of countersunk holes (7) and are used to position the positioning rod (3).

2. A sampling tube for a fully automatic nucleic acid extractor according to claim 1, characterized in that: The clamping assembly (8) comprises a return spring (801), one end of which is fixedly connected to an inner wall of one side of the countersunk hole (7), the other end of which is fixedly connected to a sliding column (802), and one end of which is inserted into the interior of the positioning rod (3).

3. A sampling tube for a fully automatic nucleic acid extractor according to claim 2, characterized in that: The outer wall of the sliding column (802) is slidably connected to the inner wall of the countersunk hole (7), and the end of the sliding column (802) away from the return spring (801) is configured to be hemispherical (10).

4. A sampling tube for a fully automatic nucleic acid extractor according to claim 3, characterized in that: Two groups of positioning holes (11) matching the hemispherical shapes (10) are provided on the outer wall of the positioning rod (3), the two groups of positioning holes (11) are symmetrically arranged, and the two groups of hemispherical shapes (10) are respectively inserted into the inside of the two groups of positioning holes (11).

5. The sampling tube for a fully automatic nucleic acid extractor according to claim 1, characterized in that: Two groups of extrusion parts (12) are arranged on the outer wall of the sampling tube body (1), the two groups of extrusion parts (12) are arranged symmetrically, and the sampling tube body (1) is arranged as a soft elastic tube that can be extruded and deformed.

6. A sampling tube for a fully automatic nucleic acid extractor according to claim 1, characterized in that: The swab catheter (5) is configured to be in a funnel shape with an inner diameter that gradually decreases from top to bottom, and the swab catheter (5) is configured to be a hard catheter.

7. A sampling tube for a fully automatic nucleic acid extractor according to claim 1, characterized in that: The top of the sampling tube body (1) is hingedly connected to a tube cover (13) via a flip cover hinge, and the bottom of the tube cover (13) is fixedly connected to a sealing block (14) that is compatible with the top opening of the sampling tube body (1), and the sealing block (14) is snap-fitted into the top opening of the sampling tube body (1).

Images